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Updated: Jun 1, 2026

05:59
Green Synthesis of Quinoline-Based Ionic Liquid
Published on: September 27, 2024
2-[(E)-2-(4-Ethoxy-phen-yl)ethen-yl]-1-methyl-quinolinium iodide dihydrate
Summary
This study details the crystal structure of a quinolinium compound, revealing an almost planar cation with an E configuration. Hydrogen bonds and π-π interactions form a two-dimensional network in its solid state.
Area of Science:
- Crystallography
- Materials Science
- Organic Chemistry
Background:
- Understanding the solid-state structures of organic compounds is crucial for predicting their properties.
- Quinolinium derivatives are important in various chemical applications.
Purpose of the Study:
- To elucidate the crystal structure of the title compound, C(20)H(20)NO(+)·I(-)·2H(2)O.
- To investigate intermolecular interactions within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- Analysis of bond lengths, angles, and intermolecular contacts was performed.
Main Results:
- The cation C(20)H(20)NO(+) exhibits near planarity with an E configuration.
- A dihedral angle of 0.7° was observed between the quinolinium and benzene rings.
- Anti-parallel stacking of cations with π-π interactions and a network of hydrogen bonds (O-H⋯O, O-H⋯I, C-H⋯I) were identified, forming a 2D network parallel to the (001) plane.
Conclusions:
- The crystal structure is stabilized by a combination of π-π stacking and extensive hydrogen bonding.
- The findings provide insights into the supramolecular assembly of quinolinium salts.

